Journal of Dalian Maritime University >
2021 , Vol. 47 >Issue 1: 119 - 125
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2021.01.014
Effects of electrical parameters and reaction time on preparation of thermal barrier ceramic coating by micro arc oxidation
Received date: 2020-09-28
Revised date: 2020-10-29
Online published: 2020-10-29
In order to solve the problems of complex operation, high cost and poor maintainability of traditional piston top protection technology, the thermal barrier ceramic coating was prepared on the surface of cast aluminum alloy (ZL109) by micro arc oxidation technology to resist the thermal shock and high temperature corrosion of piston top. Based on the previous work, the effects of power frequency, duty cycle and reaction time on the preparation of thermal barrier ceramic coating were studied. Experiments show that the surface of the ceramic coating is smoother, the pore defects are rare, and the film is dense under the conditions of 400 Hz power frequency, 40% duty cycle and 20 min reaction time. The results show that micro arc oxidation technology has a good application prospect in the field of piston top surface protection.
SUN Chang-fei , LI Geng-tian , MA Chun-sheng . Effects of electrical parameters and reaction time on preparation of thermal barrier ceramic coating by micro arc oxidation[J]. Journal of Dalian Maritime University, 2021 , 47(1) : 119 -125 . DOI: 10.16411/j.cnki.issn1006-7736.2021.01.014
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